(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) Create start PI tag

(PHP 5 >= 5.1.0, PHP 7) Get the value of an attribute by index

(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0) End current CDATA

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Decodes XML into native PHP types

(^) Sets the given string as encoding void

(^) Returns SDO_DAS_XML_Document for a given xml instance string

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Register a PHP function to generate documentation

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Set up start namespace declaration handler

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Register a PHP function to resource method matching method_name

(PECL xmldiff >= 0.8.0) Produce new XML document based on diff